Masters in Professional Accountancy

My name is Sonia and I would appreciate some help with a topic.
I just enrolled myself for a Masters of Science in Professional Accountancy- Online Course from University of London – Each course is 30 credit hours.
Since I work full time – which is about 50 hours a week, how practical would it be to take two courses worth 30 credit hours each for a session which lasts from July 2016 until Dec 2016? I am okay with long study hours and I have a two day weekend but just not sure how heavy a 30 credit hour program would be. It shall consist of 25% coursework and 75% thesis.

In my MRes I had ideally wanted to dedicate about 10h per credit as AOE26 has said. But when it came to it, it was so full on that that was impossible. I ended up dedicating about 4h per credit I'd say, and less than that for the larger modules (e.g., >20 credits).